An Environmentally Friendly Compact Microfluidic Hydrodynamic Sequential Injection System Using Curcuma putii Maknoi & Jenjitt. Extract as a Natural Reagent for Colorimetric Determination of Total Iron in Water Samples

Figure 7

Effect of (a) flow rate, (b) sample volume, and (c) mixing zone length on sensitivity of iron (III) determination.

(a)

(b)

(c)